Art of treating flour.



No. 812,777. PATENTED FEB. 13, 1906. E. E. WERNER.

ART OF TREATING FLOUR.

APPLICATION FILED APK.20, 1905.

\ on H f; k U 1 Q E $5 a awm wboz www Ernest E. Werner W% I y wssm:

ERNEST E. WERNER, OF

INDIANAPOLIS, INDIhNA.-

ART OFTREATING FLOUR.

To all whom it may concern:

s ecifications-Letter- Patent. Application filed April 20, 1.905- Seriallio. 256,685. I

ratented lfeb, 13,1906.

. I eating a suitable air-pump; 1 1, a reservoir for Beit known that'IEnnss'r E. WERNER, a aqua-ammonia; 12,?aj'valved passage leading citizenof the United States, residingat Indianapolis, in the county of Marionand State of Indiana, have discovered certain new and usefulImprovements in the Art of Treating Flour, of which the following is aspecification.

In the commercial production of cereal flour it is desirable that thenatural color be modified, and my present discovery relates to a simple'butefiicient process for accomplish- .ing 'such desirable modification.,.A ,color acid, and recently Patents Nos. 758,883and 758,884, of May 3,1904, and No. 759,651, of

" ous rocesses requires considerable complimodification has beenproduced b Frichot, as described in his British Patent 0. 21,971

action of an electric arc and subjecting the flour to theresilltant'gas'. Another recess is described b Andrews et al. in nitedStates Pateht 10. 693,207, of February 11, 1902,. which process consistsin subjectin flour tothe action of gaseous nitrogen peroxi produced byadding iron sulfate to nitric May 10, 1904, have been granted to Alsopfor a process for the same urpose, in which the treating-gas is roduce bsubjecting a current of an to t e action 0 a flaming electric discharge.The carrying out of these varicate apparatus, and the resulting productis one in which the bloom of the ilour is .destroyed, the product being-a bluish white.

11 have discovered that by decomposing ammonia in the presence of anoxidizing agent I obtain a resultant gas which if applied to a cerealflour or to the cereals themselves will have a bleaching effect upon theflour, which, however, will not destro the peculiar bloom which is acharacteristic of a high-grade product.

In carrying out my process I can blow air through aqua-ammonia and passthe ammonia-la on current, together with a desirable uantity of unladenair, through a heated c amber containing 'a metallic substance iiapabl.of supplyingoxygen-i. 43., such as platinum sponge or a metallic oxid,like copper oxidand permit the resulting gas to pass into any desirableform of chamber or agitator throughwhich the flour or grain is passed.The accompanyingdra'wing Illustrates diagrammatically an apparatus bymeans of which my process may be practiced, 10 indi- While I h veshownan apparatus in which plying ammonia-+115, for-instance, liquidammonia+-maybeused in carrying out my process without departing fromrthespirit of. the invention.

I claim as my discovery-r 1. That improvement In the art of treatingcereals which consists in subjecting the same to the action of the gasresulting from the de- 2; That improvement in the art of treatingcereals which consists in subjecting the same to the action of the gasresulting from the decomposition of ammonia in'the presence of anoxidizing agent.

3. That improvement in the art of treating cereals which consists inpassing ammonia over a heated metallic substance capable of yielding oxyan, and subjecting the cereal to the action oi the resulting gas.

4. That improvement in the art of treating cereals "which consists inpassing ammonia over a heated metallic mud and subjecting the cereal tothe action of the resulting gas.

5. 'lhatimprovement in the art of treating cereals whidh'ciinsists insubjecting the same to the action of the as resulting from passingammonia over a heatcd metallic oxid.

6. That improvement in the art of treating cereals which consists insubjcctin r the same to the action of the gas resultin irom passingammoniaovcr aheated metal ic substance capable of yielding oxygen.

7. That improvement in the art of treating to the action of the asrcsulting'Trom passing ammonia over a rented substance capable ofiolding oxygen.

8. hat ii'nprovcment in the art of treating cereals which consists insubjectin the same to the action of the gas resulting om passing ammoniaover heated copper'oxid.

aqua-ammonia is usedfi-t Is of'course to be understood that any materialcapable of supccrcals which consists in subjectim the same.

from said reservoir; 13 a valved'passage leadcompositionof ammonia inthe presence of ir-summed i i 9. That improvement in the art of treatingcereals which consists in passing .a-nnnonia over heated copper oxid andsubjecting the cereal to the resultant gas.

10. That improvement in the art of treatmg cereals which consists in subecting the 11. That improvement in the art of treat-Q;

ing cereals which consists in subjecting the same to the gas resultingfrom the mixture of air and the gas resulting from the passage of anair-current laden with vapor of aqua-ainmonia over a metallic substancecapable of yielding oxygen.

1;. That improvement in the art of treating cereals which consists inforcing .air through aqtut-ammonia, mixing the resultant vapor with air,passing the mixture over a heated metallic oxid and subjecting thecereal to theaction of the resultant. gas.

13. That improvement in the art. of treating cereals which consists in frcing air through aqua-anunonia, mixing the resultant vapor with air,passing the mixture over a. heated metallic substance capable ofyielding oxygen, and subjecting the cereal to the 8/0- tion of theresultant gas.

14. That im rovement in the art of treating cereals which consists inforcin air through aque-ammoma-,nuxing the resu ting vapor with air,passing the mixture over heated copper oxid, and subjectingthe cereal to35 the action of the resulting gas.

15. Thatirnprovement in the art oftreating cereals which consists insubjecting the same to the aetionof the gas resulting in passing ammoniaover a substance capab yielding oxygen thereto in condition to reactthereon.

16. That improvement in the art of treating cereals which consists insubjecting the.

e of 0:

same to the gas resulting from the mixture of A 5 air and the gasresulting from the passageof an air-currentladen with gaseous ammoniaover a substance capable of yielding oxygen thereto in condition toreact thereon.

In witness whereof I havehereunto set my 50 hand and seal, atIndianapolis, Indiana, tlns 15th day of A ril', A. D. 1905.

ERN ST E. WERNER. [L. 5.] Witnesses: v

ARTHUR M. H001), JAMES A. WALSH.

